Question

Which of the following is not permitted when solving a system of linear equations using matrices?

Answer 1

If i remember correctly the answer is interchange columns. 

Answer 2

Answer:

Interchange columns are not permitted when solving a system of linear equations using matrices

Step-by-step explanation:

when solving a system of linear equations using matrices

We try to get identity matrix using row operations

We can interchange any rows. Rows can be interchanged.

We can also multiply any row by a constant.

But columns cannot be interchanged.

Interchange columns are not permitted when solving a system of linear equations using matrices